|
|
|
|
|
| Panagiotopoulos, Christos; Sempere, Richard. |
| Large particles (> 60 mu m) were collected using in situ pumps deployed at 30 and 200 m depth at 2 typical stations in the southern Indian Ocean (Polar Front Zone [PFZ] and Sub-Antarctic Area [SAr]). The samples were incubated in vitro with their own bacterial assemblages for 7 to 17 days in batches under oxic conditions in the dark. Particulate organic carbon (POC) and sugars were monitored over time. Particulate sugars (PCHO-C) accounted for 5 to 20% of POC in the SAr, while they represented 5 to 8% of POC in the PFZ station at the beginning of the experiments. Molecular level analysis indicated that at the time of collection, ribose was among the most abundant sugars (18 to 30 wt% of PCHO-C) at the PFZ station and was rapidly degraded (k = 0.051 to... |
| Tipo: Text |
Palavras-chave: Sinking particles; In vitro incubation experiments; Sugar degradation; Southern Indian Ocean. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00236/34737/33181.pdf |
| |
|
|
| Leroy, Emmanuelle C.; Samaran, Flore; Stafford, Kathleen M.; Bonnel, Julien; Royer, Jean-yves. |
| The southern Indian Ocean is believed to be a natural territory for blue and fin whales. However, decades after commercial and illegal whaling decimated these populations, little is known about their current status, seasonal habitat or movements. Recent passive acoustic studies have described the presence of 4 acoustic populations of blue whales (Antarctic and 3 'pygmy' types), but are generally limited temporally and geographically. Here, we examine up to 7 yr of continuous acoustic recordings (2010-2016) from a hydrophone network of 6 widely spaced sites in the southern Indian Ocean, looking for the presence of Antarctic and pygmy blue and fin whales. Power spectral density analyses of characteristic and distinct frequency bands of these species show... |
| Tipo: Text |
Palavras-chave: Pygmy blue whales; Antarctic blue whales; Fin whales; Southern Indian Ocean; Passive acoustic monitoring; Sympatry. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00516/62731/67110.pdf |
| |
|
| |
|
|
|
